<template>
  <section class="aa">
    <div class="container" :class="act">
      <div class="user singinBx">
        <div class="imgBx"><img src="../assets/LoginBG.jpg" alt="" /></div>
        <div class="formBx">
          <form>
            <h2>登录</h2>
            <input
              v-model="Loginform.username"
              placeholder="用户名"
              type="text"
              maxlength="10"
              required
            />
            <input
              v-model="Loginform.pwd"
              :type="Loginform.type"
              placeholder="密码"
              id="LoginPwd"
              maxlength="6"
              required
            />
            <input
              type="checkbox"
              name="显示密码"
              id="showPwd"
              v-model="Loginform.showPwd"
              @change="changePwdType"
              style="margin: 15px 5px"
            /><label for="showPwd">显示密码</label>
            <input type="submit" value="登录" @click="Login_Up()" />
            <input type="button" value="人脸识别登录" @click="drawer = true" />
            <p class="signup">
              没有账号？<a href="#" @click="topggleForm">注册</a>
            </p>
          </form>
        </div>
      </div>
      <div class="user singupBx">
        <div class="formBx">
          <form>
            <h2>注册</h2>
            <input
              v-model="form.username"
              placeholder="用户名"
              type="text"
              minlength="3"
              maxlength="10"
              required
            />
            <input
              v-model="form.pwd"
              :type="form.type"
              placeholder="密码"
              minlength="3"
              maxlength="6"
              required
            />
            <input
              v-model="form.againpwd"
              :type="form.type"
              placeholder="确认密码"
              minlength="3"
              maxlength="6"
              v-on:blur="inspectPwd"
              required
            />

            <input
              type="checkbox"
              name=""
              id="registShowPwd"
              v-model="form.showPwd"
              style="margin-left: 13%"
              @change="changeRegisterPwdType"
            /><label for="registShowPwd">显示密码</label>
            <input
              type="checkbox"
              name="是否注册人脸识别："
              v-model="form.facecheck"
              style="margin: 15px 5px"
            /><label>是否注册人脸识别</label>

            <input
              type="submit"
              value="注册"
              @click="RegisterFormVerification()"
            />
            <p class="signup">
              已有账号？<a href="#" @click="topggleForm">登录</a>
            </p>
          </form>
        </div>
        <div class="imgBx"><img src="../assets/registerBG2.jpg" alt="" /></div>
      </div>
      <el-drawer
        :visible.sync="drawer"
        :with-header="false"
        :destroy-on-close="true"
        size="50%"
        direction="ltr"
      >
        <div class="face_a">
          <h1>人脸识别</h1>
          <div class="video">
            <div>
              <video
                id="videoCamera"
                width="250"
                height="250"
                autoplay
                muted
                style="border-radius: 180px; box-shadow: darkgrey 0 0 30px 5px"
              ></video>
            </div>
            <canvas
              style="display: none"
              id="canvasCamera"
              width="250"
              height="250"
            ></canvas>
          </div>
          <div class="img_bg_camera">
            <img
              :src="imgSrc"
              alt=""
              class="tx_img"
              style="border-radius: 360px; box-shadow: darkgrey 0 0 30px 5px"
              v-if="imgif"
            />
          </div>
          <div class="bommen">
            <el-button type="success" @click="getCompetence()"
              >打开摄像头</el-button
            >
            <el-button type="success" @click="setImage()">拍照</el-button>
            <el-button
              type="primary"
              @click="openFullScreen1"
              v-loading.fullscreen.lock=""
              >提交
            </el-button>
          </div>
        </div>
      </el-drawer>
    </div>
  </section>
</template>
<script>
import axios from "axios";
axios.defaults.withCredentials = true
export default {
  name: "LoginAndRegister",
  data() {
    return {
      form: {
        username: "",
        pwd: "",
        againpwd: "",
        facecheck: 0,
        showPwd: false,
        type: "password",
      },
      act: "",
      Loginform: {
        username: "",
        pwd: "",
        showPwd: false,
        type: "password",
      },
      drawer: false,
      imgif: false,
      videoWidth: 250,
      videoHeight: 250,
      imgSrc: "",
      thisCancas: null,
      thisContext: null,
      thisVideo: null,
      imga: "",
    };
  },
  methods: {
    topggleForm() {
      this.act = this.act == "" ? "active" : "";
      this.form.facecheck = 0;
      this.form.showPwd = false;
      this.Loginform.showPwd = false;
    },
    Login_Up() {
      if (this.Loginform.username != "" && this.Loginform.pwd != "") {
          axios({
            method:'post',
            url: 'http://localhost:8989/login',
            crossDomain: true,
            data: {
              username:this.Loginform.username,
              password:this.Loginform.pwd
            }
          }).then((res)=>{
              if (res.data.code==200) {
                console.log(res);
                this.$message({
                  message: "登录成功!",
                  showClose: false,
                  type: "success",
                });
                console.log(res.data.data.nikename);
                sessionStorage.setItem("UserInfo",JSON.stringify(res.data.data))
                let user = JSON.parse(sessionStorage.getItem("UserInfo"))
                console.log(user);
                this.$router.push({name:"HomePage",params:{data:res.data.data}});
              }else{
                console.log(res);
                this.$message({
                  message: res.data.msg,
                  showClose: false,
                  type: "error",
                });
              }
          })
      }
    },
    // 登录界面的显示密码
    changePwdType() {
      this.Loginform.type = this.Loginform.showPwd ? "text" : "password";
    },
    // 登录界面的显示密码
    changeRegisterPwdType() {
      this.form.type = this.form.showPwd ? "text" : "password";
    },
    // 注册页面的两次输入密码是否一致
    inspectPwd() {
      if (this.form.pwd != this.form.againpwd) {
        this.$message({
          message: "两次密码不一致!",
          showClose: false,
          type: "error",
        });
        return false;
      }
    },
    RegisterFormVerification() {
      if (this.form.facecheck && this.form.username!='') {
        this.drawer = true
        this.getCompetence();
      }else{
        axios({
          method:'post',
          url: 'http://localhost:8989/register',
          data: {
            username:this.form.username,
            password:this.form.againpwd
          }
        }).then((res)=>{
          console.log(res);  
        });
      }
    },

    getCompetence() {
      var _this = this;
      this.thisCancas = document.getElementById("canvasCamera");
      this.thisContext = this.thisCancas.getContext("2d");
      this.thisVideo = document.getElementById("videoCamera");
      // 旧版本浏览器可能根本不支持mediaDevices，我们首先设置一个空对象
      if (navigator.mediaDevices === undefined) {
        navigator.mediaDevices = {};
      }
      // 一些浏览器实现了部分mediaDevices，我们不能只分配一个对象
      // 使用getUserMedia，因为它会覆盖现有的属性。
      // 这里，如果缺少getUserMedia属性，就添加它。
      if (navigator.mediaDevices.getUserMedia === undefined) {
        navigator.mediaDevices.getUserMedia = function (constraints) {
          // 首先获取现存的getUserMedia(如果存在)
          var getUserMedia =
            navigator.webkitGetUserMedia ||
            navigator.mozGetUserMedia ||
            navigator.getUserMedia;
          // 有些浏览器不支持，会返回错误信息
          // 保持接口一致
          if (!getUserMedia) {
            return Promise.reject(
              new Error("getUserMedia is not implemented in this browser")
            );
          }
          // 否则，使用Promise将调用包装到旧的navigator.getUserMedia
          return new Promise(function (resolve, reject) {
            getUserMedia.call(navigator, constraints, resolve, reject);
          });
        };
      }
      var constraints = {
        audio: false,
        video: {
          width: this.videoWidth,
          height: this.videoHeight,
          transform: "scaleX(-1)",
        },
      };
      navigator.mediaDevices
        .getUserMedia(constraints)
        .then(function (stream) {
          // 旧的浏览器可能没有srcObject
          if ("srcObject" in _this.thisVideo) {
            _this.thisVideo.srcObject = stream;
          } else {
            // 避免在新的浏览器中使用它，因为它正在被弃用。
            _this.thisVideo.src = window.URL.createObjectURL(stream);
          }
          _this.thisVideo.onloadedmetadata = function () {
            _this.thisVideo.play();
          };
        })
        .catch((err) => {
          console.log(err);
        });
    },
    // 绘制图片
    setImage() {
      this.imgif = true;
      var _this = this;
      // 点击，canvas画图
      _this.thisContext.drawImage(_this.thisVideo, 0, 0, 250, 250);
      console.log(_this.thisContext);
      // 获取图片base64链接
      var image = this.thisCancas.toDataURL("image/png");
      _this.imgSrc = image;
      window.sessionStorage.setItem("img", _this.imgSrc);

      console.log(this.imgSrc);
    },

    //关闭摄像头并上传数据
    openFullScreen1() {
      this.thisVideo.srcObject.getTracks()[0].stop(), //关闭摄像头
        setTimeout(() => {
          // var file = this.imga.substr(22)
          this.imga = window.sessionStorage.getItem("img");
          var file = this.imga;
          if (!this.form.facecheck) {
            axios({
              method: "post",
              url: "http://localhost:8989/faceLogin",
              data: {
                file
              },
            }).then((res) => {
              console.log(res);
              if (res.data.code == 500) {
                this.$message({
                  message: res.data.msg,
                  showClose: false,
                  type: "error",
                });
              } else if (res.data.code == 200) {
                this.$message({
                  message: "登录成功！",
                  showClose: false,
                  type: "success",
                });
                this.$router.push({name:"HomePage",params:{data:res.data.data[0]}});
              }
            });
          } else {
            var datas = {faceBase:file,username:this.form.username};
            axios({
              method: "post",
              url: "http://localhost:8989/registerByFace",
              data: datas,
            }).then((res) => {
              if (res.data.code == 500) {
                this.$message({
                  message: res.data.msg,
                  showClose: false,
                  type: "error",
                });
              } else if (res.data.code == 200) {
                this.$message({
                  message:"注册成功",
                  showClose:false,
                  type:"success"
                })
                this.topggleForm()
              }
            });
          }
        }, 2000);
    },
  },
  watch: {
  },
};
</script>

<style scoped>
@import "../css/LoginAndRegister.css";

.face_a {
  height: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.bommen {
  margin-bottom: 20px;
}
</style>